“Three-quarters of the sicknesses of intelligent people come from their intelligence. They need at least a doctor who can understand this sickness
“It is mind which does the work of the world, so that the more there is of mind, the more work will be accomplished
“Cruelty is, perhaps, the worst kind of sin. Intellectual cruelty is certainly the worst kind of cruelty
“It is a thousand times better to have common sense without education than to have education without common sense
“I've always felt that a person's intelligence is directly reflected by the number of conflicting points of view he can entertain simultaneously on the same topic.
“Neither a lofty degree of intelligence nor imagination nor both together go to the making of genius. Love, love, love, that is the soul of genius
“Thought means life, since those who do not think so do not live in any high or real sense. Thinking makes the man
“For where the instrument of intelligence is added to brute power and evil will, mankind is powerless in its own defense
“Of all treasons against humanity, there is no one worse than his who employs great intellectual force to keep down the intellect of his less favored brothers
“It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change
“An extensive knowledge is needful to thinking people- it takes away the heat and fever; and helps, by widening speculation, to ease the burden of the mystery
“The only means of strengthening one's intellect is to make up one's mind about nothing , to let the mind be a thoroughfare for all thoughts, not a select party